CN105046305B - A kind of micro-optics tag system based on ring-like aperture ultra-thin lens - Google Patents
A kind of micro-optics tag system based on ring-like aperture ultra-thin lens Download PDFInfo
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- CN105046305B CN105046305B CN201510539488.XA CN201510539488A CN105046305B CN 105046305 B CN105046305 B CN 105046305B CN 201510539488 A CN201510539488 A CN 201510539488A CN 105046305 B CN105046305 B CN 105046305B
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Abstract
The invention discloses a kind of micro-optics tag system based on ring-like aperture ultra-thin lens, including transmitting terminal and receiving terminal, transmitting terminal includes miniature label code and label lens, and miniature label code is located at the front focal plane of label lens；Receiving terminal includes the ring-like aperture ultra-thin lens of four secondary reflections and imaging sensor, imaging sensor is located at the back focal plane of the ring-like aperture ultra-thin lens of four secondary reflections, and the light that miniature label code is sent out passes through label lens successively and the ring-like aperture ultra-thin lens of four secondary reflections are ultimately imaged on the image sensor.Compared with prior art, the beneficial effects of the invention are as follows：The micro-optics tag system based on ring-like aperture ultra-thin lens that the present invention designs, ultra-thin large aperture long-focus lens is realized by way of ring-like folding, and this lens are used as to the receiving terminal mobile lens of micro-optics tag system, reception distance can be increased, realize distance reception of the mobile phone to miniature label code.
Description
Technical field
The invention belongs to the technical fields of Internet of Things and optical design, are suitable for mobile lens and are based on the ring-like hole of four secondary reflections
The receiving terminal of diameter ultra-thin lens is related to a kind of micro-optics tag system structure, more particularly to a kind of ultra-thin based on ring-like aperture
The micro-optics tag system of mirror.
Background technology
With the development and progress of technology of Internet of things, label information identification technology spreads all over each neck of daily life and work
Therefore domain, people can easily obtain information needed.Micro-optics label has as a kind of new transmission, information storage technology
The incomparable advantage of other automatic identification technologies, from once being of considerable interest.The size of micro-optics label is only
There is millimeter magnitude, because it is enough small, compared with the bar code of suitable size, the information data amount of storage is sufficiently large.And
The security hidden trouble of RFID technique is not present in it, can be very good to be applied to the identification that information is realized in technology of Internet of things.It is micro-
Optical tag in the Information Exchange System of mobile phone, in augmented reality and gesture identification is medium can all good application.
Micro-optics tag system is mainly made of transmitting terminal, channel and receiving terminal.Transmitting terminal includes the miniature of storage information
Label code and a small micro-optical lens, channel are spaces, and receiving terminal is mobile lens and imaging sensor.In transmitting terminal
The mobile lens of micro-optical lens and receiving terminal collectively form entire optical system, make miniature label code by the optical system
Received by the imaging sensor by mobile phone and information included in it can be can recognize that after system.
Studies have shown that the reception distance range that system can be correctly decoded is proportional to aperture and the focal length of camera object lens.It is existing
When some micro-optics tag systems are received using general mobile lens, receives distance and be very limited.
Invention content
Problem to be solved of the present invention is in view of the above shortcomings of the prior art, and to provide a kind of super based on ring-like aperture
The micro-optics tag system of thin lens.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of micro-optics tag system based on ring-like aperture ultra-thin lens, including transmitting terminal and receiving terminal, transmitting terminal packet
Miniature label code and label lens are included, miniature label code is located at the front focal plane of label lens；Receiving terminal includes four secondary reflections
Ring-like aperture ultra-thin lens and imaging sensor, imaging sensor are located at the back focal plane of the ring-like aperture ultra-thin lens of four secondary reflections
Place, the light that miniature label code is sent out passes through label lens successively and the ring-like aperture ultra-thin lens of four secondary reflections are ultimately imaged and are scheming
As on sensor.
Receiving terminal receives enlarged drawing, the focal length and label of enlargement ratio and the ring-like aperture ultra-thin lens of four secondary reflections
The ratio of the focal length of lens is directly proportional.
It is correctly decoded aperture and its focal length of the reception distance of miniature label code with the ring-like aperture ultra-thin lens of four secondary reflections
Product it is directly proportional.
The front and back reflecting surface of the ring-like aperture ultra-thin lens of four secondary reflections is multiple high order aspheric surfaces；
Aspherical upper each point opposed apexes are defined along the dimension z of optical axis by following formula：
C=1/R in formula0, R0Represent the curvature of aspheric vertex of surface；
K represents quadratic surface constant,
R represents the horizontal distance apart from optical axis,
a1-anFor non-spherical repairing positive coefficient.
The base material of the ring-like aperture ultra-thin lens of four secondary reflections is CaF2。
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of micro-optics tag system structure based on ring-like aperture ultra-thin lens proposed by the present invention, when receiving terminal mobile phone
When the focal length of camera lens is more than the label focal length of lens, the picture of a relatively miniature label code amplification, enlargement ratio can be received
The ratio of the focal length of focal length and label lens depending on the ring-like aperture ultra-thin lens of four secondary reflections.
Studies have shown that the reception distance that can be correctly decoded of system with the aperture of receiving terminal mobile lens and focal length at just
Than so when being received with general mobile lens, receiving distance and being restricted.The present invention mainly carries out the mobile lens of receiving terminal
Curve guide impeller is realized ultra-thin large aperture long-focus lens by way of ring-like folding, and this lens is used as micro-optics
The receiving terminal mobile lens of tag system, can increase reception distance, realize distance reception of the mobile phone to miniature label code.
Ring-like aperture ultra-thin lens weight and thickness compared with the conventional lenses with identical clear aperature area and focal length
It is all much smaller, such as the size of the ring-like aperture ultra-thin lens of four secondary reflections is suitable with 25 cent coins, can be completely applied to hand
Machine.It is widely applied in daily life convenient for micro-optics label.
Description of the drawings
Fig. 1 is the structural schematic diagram of the micro-optics tag system based on ring-like aperture ultra-thin lens of the present invention；
Fig. 2 is the light reflection path schematic diagram of the ring-like aperture ultra-thin lens of four secondary reflections；
Fig. 3 is the comparison diagram that miniature label code is located at transmitting terminal and receiving terminal；Fig. 3 a are the miniature label codes of transmitting terminal
Original graph；Fig. 3 b are the images for the miniature label code that receiving terminal receives.
Wherein, 1, miniature label code, 2, label lens, the ring-like aperture ultra-thin lens of 3, four secondary reflections, 31, ring-like aperture,
32,1 secondary reflection is aspherical, and 33,2 secondary reflections are aspherical, and 34,3 secondary reflections are aspherical, and 35,4 secondary reflections are aspherical, and 36, image planes,
4, imaging sensor.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1, a kind of micro-optics tag system based on ring-like aperture ultra-thin lens, including transmitting terminal and reception
End, transmitting terminal includes miniature label code 1 and label lens 2, and miniature label code 1 is located at the front focal plane of label lens 2；It receives
End includes the ring-like aperture ultra-thin lens 3 of four secondary reflections and imaging sensor 4, and imaging sensor 4 is located at the ring-like aperture of four secondary reflections
At the back focal plane of ultra-thin lens 3, the light that miniature label code 1 is sent out passes through label lens 2 and the ring-like hole of four secondary reflections successively
Diameter ultra-thin lens 3 are ultimately imaged on imaging sensor 4.
The focal length of label lens 2 is fa, i.e., miniature label code 1 to 2 centre distance of label lens is faSo that from miniature mark
What the light that label code 1 is sent out was sent out after label lens 2 is directional light.Receiving terminal mobile lens are the ring-like aperture of four secondary reflections
Ultra-thin lens 3, focal length fD, receive distance be L, that is, label lens 2 and ring-like 3 center of aperture ultra-thin lens of four secondary reflections it
Between distance, imaging sensor 4 is located at the back focal plane of the ring-like aperture ultra-thin lens of four secondary reflections 3, and directional light passes through four times
Tore of reflection type hole diameter ultra-thin lens 3 are imaged on imaging sensor 4.The aperture diaphragm of system is label lens 2, and field stop is
Miniature label code 1.The aperture of miniature label code 1 is b, according to the thin-lens equation：
In formula, L is object distance, and v is image distance, fDFor focal distance of thin convex lens.The size for then receiving image is b '：
B'=(v-fD) D/v=fDD/L
The enlargement ratio of miniature label code 1 is Mb, Mb=b'/b=fD/fa, i.e., the times magnification for the image that receiving terminal receives
The focal length of the ring-like aperture ultra-thin lens of rate and four secondary reflections 3 is directlyed proportional to the ratio of the focal length of label lens 2.
It is L to receive distance：
L=fDD/b'
When 1 size of miniature label code that imaging sensor 4 can identify determines, system can be correctly decoded miniature label code
The aperture D and its focal length f of 1 reception distance L and the ring-like aperture ultra-thin lens of four secondary reflections 3DProduct it is directly proportional.
So in order to increase the reception distance of system, it is necessary to increase aperture and the focal length of receiving terminal mobile lens, the present invention
It realizes ultra-thin large aperture long-focus lens by way of ring-like folding, i.e., uses the ring-like aperture ultra-thin lens of four secondary reflections 3
In the mobile lens of receiving terminal.
The front and back reflecting surface of the ring-like aperture ultra-thin lens of four secondary reflections 3 is multiple high order aspheric surfaces；
Aspherical upper each point opposed apexes are defined along the dimension z of optical axis by following formula：
C=1/R in formula0, R0Represent the curvature of aspheric vertex of surface；
K represents quadratic surface constant,
R represents the horizontal distance apart from optical axis,
a1-anFor non-spherical repairing positive coefficient.
The base material of the ring-like aperture ultra-thin lens of four secondary reflections 3 is CaF2。
It is illustrated in figure 2 the reflection path schematic diagram that light enters the ring-like aperture ultra-thin lens of four secondary reflections；Four secondary reflections
Ring-like aperture ultra-thin lens 3 include ring-like aperture 31, aspherical 32,2 secondary reflection aspherical 33 of 1 secondary reflection, and 3 secondary reflections are aspherical
34,4 secondary reflections aspherical 35 and image planes 36.
Light enters the ring-like aperture ultra-thin lens 3 of four secondary reflections from 31 region of ring-like aperture at edge, passes through four secondary reflections
The speculum multiple reflections of ring-like reflecting surface, are finally imaged in image planes 36 before and after ring-like aperture ultra-thin lens 3.Four secondary reflection
Ring-like aperture ultra-thin lens 3 by light in systems repeatedly turn back ensure to obtain in limited thickness and quality it is larger
Effective aperture and focal length realize its ultra-thin characteristic.
As shown in figure 3, miniature label code 1 uses QR codes in embodiment, Fig. 3 a are the original of the miniature label code of transmitting terminal
Figure；Fig. 3 b are the images for the miniature label code that receiving terminal receives.
Decoding can be correctly validated by receiving image.The 8-21mm that system receives when distance is received from general mobile lens increases
122-140mm when being received to the ring-like aperture ultra-thin lens 3 of four secondary reflections.
The design parameter of structure is that reception distance L is 124mm, and Entry pupil diameters, i.e. the aperture a of label lens 2 are 3mm, depending on
Rink corner is 12 °, and 1 size b of miniature label code is 2mm, 2 focal length f of label lensa
For 10mm, the effective focal length f of the ring-like aperture ultra-thin lens of four secondary reflections 3DIt is 28mm for 36mm, aperture D.
Following table is the reflective asperical parameter of the ring-like aperture ultra-thin lens of four secondary reflections 3.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (1)
1. a kind of micro-optics tag system based on ring-like aperture ultra-thin lens, it is characterised in that：The system include transmitting terminal and
Receiving terminal, transmitting terminal includes miniature label code (1) and label lens (2), before miniature label code (1) is located at label lens (2)
Focal plane；Receiving terminal includes the ring-like aperture ultra-thin lens (3) of four secondary reflections and imaging sensor (4), imaging sensor (4) position
At the back focal plane of the ring-like aperture ultra-thin lens (3) of four secondary reflections, the light that miniature label code (1) sends out passes through label successively
Lens (2) and the ring-like aperture ultra-thin lens (3) of four secondary reflections are ultimately imaged on imaging sensor (4)；
Receiving terminal receives enlarged drawing, the focal length and label of enlargement ratio and the ring-like aperture ultra-thin lens (3) of four secondary reflections
The ratio of the focal length of lens (2) is directly proportional；
The focal length of label lens is fa, i.e., miniature label code to label lens centre distance is faSo that it is sent out from miniature label code
Light sends out after label lens is directional light, receiving terminal mobile lens are the ring-like aperture ultra-thin lens of four secondary reflections,
Its focal length is fD, it is the distance between L, that is, label lens and four secondary reflections ring-like aperture ultra-thin lens center, image to receive distance
Sensor is located at the back focal plane of the ring-like aperture ultra-thin lens of four secondary reflections, and directional light is ultra-thin by the ring-like aperture of four secondary reflections
On the image sensor, the aperture diaphragm of system is label lens to lens imaging, and field stop is miniature label code, miniature label
The aperture of code 1 is b, according to the thin-lens equation：
In formula, L is object distance, and v is image distance, fDFor focal distance of thin convex lens, then the size for receiving image is b '：
B'=(v-fD) D/v=fDD/L
The enlargement ratio of miniature label code is Mb, Mb=b'/b=fD/fa, i.e., the enlargement ratio and four for the image that receiving terminal receives
The focal length of the ring-like aperture ultra-thin lens of secondary reflection is directly proportional to the ratio of the focal length of label lens, and it is L to receive distance：
L=fDD/b'
When the miniature label code size that imaging sensor can identify determines, system can be correctly decoded the reception of miniature label code
The aperture D and its focal length f of distance L and the ring-like aperture ultra-thin lens of four secondary reflectionsDProduct it is directly proportional；It is correctly decoded miniature label
The reception distance of code (1) is directly proportional to the aperture of the ring-like aperture ultra-thin lens (3) of four secondary reflections and its product of focal length；Four times anti-
The front and back reflecting surface for penetrating ring-like aperture ultra-thin lens (3) is multiple high order aspheric surfaces；
Aspherical upper each point opposed apexes are defined along the dimension z of optical axis by following formula：
C=1/R in formula0, R0Represent the curvature of aspheric vertex of surface；
K represents quadratic surface constant,
R represents the horizontal distance apart from optical axis,
a1-anFor non-spherical repairing positive coefficient；The base material of the ring-like aperture ultra-thin lens (3) of four secondary reflections is CaF2。
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| CN201510539488.XA CN105046305B (en) | 2015-08-28 | 2015-08-28 | A kind of micro-optics tag system based on ring-like aperture ultra-thin lens |
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| CN201510539488.XA CN105046305B (en) | 2015-08-28 | 2015-08-28 | A kind of micro-optics tag system based on ring-like aperture ultra-thin lens |
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| CN105046305B true CN105046305B (en) | 2018-08-21 |
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| CN113835193B (en) * | 2020-06-24 | 2023-11-03 | 京东方科技集团股份有限公司 | Flat lens and optical imaging system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414400A (en) * | 2001-10-25 | 2003-04-30 | 美国光撷科技有限公司 | Ultrathin optical image sensor and its make-up method |
| EP1927880A1 (en) * | 2005-09-22 | 2008-06-04 | Sumitomo Electric Industries, Ltd. | Laser optical device |
-
2015
- 2015-08-28 CN CN201510539488.XA patent/CN105046305B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1414400A (en) * | 2001-10-25 | 2003-04-30 | 美国光撷科技有限公司 | Ultrathin optical image sensor and its make-up method |
| EP1927880A1 (en) * | 2005-09-22 | 2008-06-04 | Sumitomo Electric Industries, Ltd. | Laser optical device |
Non-Patent Citations (2)
| Title |
|---|
| 有源加密型微光学标签系统的设计与制作;林武;《信息科技辑》;20120715;第10-11、28-30页 * |
| 环形孔径超薄光学成像系统设计;张蕊蕊;《工程科技Ⅱ辑》;20100415;第21-26页 * |
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